WebhookTest.net for ChatGPT

net.webhooktest/webhook-tester

Anonymous webhook capture, inspection, waiting, and response configuration for AI agents.

client:ChatGPT transport:streamable-http tools:8

Install WebhookTest.net in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://webhooktest.net/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs